/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:24:15,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:24:15,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:24:15,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:24:15,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:24:15,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:24:15,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:24:15,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:24:15,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:24:15,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:24:15,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:24:15,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:24:15,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:24:15,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:24:15,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:24:15,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:24:15,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:24:15,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:24:15,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:24:15,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:24:15,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:24:15,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:24:15,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:24:15,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:24:15,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 16:24:15,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:24:15,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:24:15,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:24:15,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:24:15,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:24:15,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:24:15,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:24:15,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:24:15,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:24:15,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:24:15,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:24:15,172 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:24:15,185 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:24:15,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:24:15,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:24:15,189 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:24:15,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:24:15,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:24:15,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:24:15,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:24:15,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:24:15,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:24:15,192 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:24:15,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:24:15,193 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:24:15,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:24:15,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:24:15,194 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:24:15,194 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:24:15,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:24:15,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:24:15,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:24:15,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:24:15,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:24:15,196 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:24:15,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:24:15,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:24:15,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:24:15,703 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:24:15,704 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:24:15,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c [2021-02-23 16:24:15,795 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8092c0449/470c91b9660947e6b388cdfa26c34813/FLAG884508f54 [2021-02-23 16:24:16,635 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:24:16,636 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c [2021-02-23 16:24:16,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8092c0449/470c91b9660947e6b388cdfa26c34813/FLAG884508f54 [2021-02-23 16:24:16,873 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8092c0449/470c91b9660947e6b388cdfa26c34813 [2021-02-23 16:24:16,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:24:16,890 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:24:16,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:24:16,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:24:16,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:24:16,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:24:16" (1/1) ... [2021-02-23 16:24:16,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@521abf2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:16, skipping insertion in model container [2021-02-23 16:24:16,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:24:16" (1/1) ... [2021-02-23 16:24:16,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:24:16,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:24:17,453 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c[14037,14050] [2021-02-23 16:24:17,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:24:17,518 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:24:17,641 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c[14037,14050] [2021-02-23 16:24:17,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:24:17,702 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:24:17,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:17 WrapperNode [2021-02-23 16:24:17,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:24:17,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:24:17,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:24:17,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:24:17,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:17" (1/1) ... [2021-02-23 16:24:17,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:17" (1/1) ... [2021-02-23 16:24:17,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:17" (1/1) ... [2021-02-23 16:24:17,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:17" (1/1) ... [2021-02-23 16:24:17,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:17" (1/1) ... [2021-02-23 16:24:17,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:17" (1/1) ... [2021-02-23 16:24:17,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:17" (1/1) ... [2021-02-23 16:24:17,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:24:17,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:24:17,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:24:17,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:24:17,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:24:17,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:24:17,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:24:17,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:24:17,968 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:24:17,968 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:24:17,968 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:24:17,968 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:24:17,968 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:24:17,968 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:24:17,968 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:24:17,968 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:24:17,969 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:24:17,969 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:24:17,969 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:24:17,969 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:24:17,969 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:24:17,970 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:24:17,970 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:24:17,970 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:24:17,970 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-23 16:24:17,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:24:17,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:24:17,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:24:17,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:24:17,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:24:17,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:24:17,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:24:17,971 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:24:17,972 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:24:17,972 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:24:17,972 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-23 16:24:17,972 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:24:17,972 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:24:17,972 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:24:17,973 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:24:17,973 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:24:17,973 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-23 16:24:17,973 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 16:24:17,973 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:24:17,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:24:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:24:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:24:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:24:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:24:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:24:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:24:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:24:17,975 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:24:17,975 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:24:17,975 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:24:17,975 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:24:17,975 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:24:17,975 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:24:17,975 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:24:17,976 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:24:17,976 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:24:17,976 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:24:17,976 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:24:17,976 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:24:17,976 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:24:17,977 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:24:17,977 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:24:17,977 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:24:17,977 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:24:17,977 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-23 16:24:17,977 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:24:17,978 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:24:17,978 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:24:17,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:24:17,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:24:17,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:24:17,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:24:17,979 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:24:17,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:24:17,979 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:24:17,979 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:24:17,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:24:17,979 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:24:17,979 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:24:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:24:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:24:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:24:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:24:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:24:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 16:24:17,981 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:24:17,981 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:24:17,981 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:24:17,981 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-23 16:24:17,981 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-23 16:24:17,981 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:24:17,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:24:17,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:24:17,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:24:19,050 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:24:19,050 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:24:19,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:24:19 BoogieIcfgContainer [2021-02-23 16:24:19,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:24:19,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:24:19,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:24:19,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:24:19,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:24:16" (1/3) ... [2021-02-23 16:24:19,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4015548c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:24:19, skipping insertion in model container [2021-02-23 16:24:19,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:17" (2/3) ... [2021-02-23 16:24:19,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4015548c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:24:19, skipping insertion in model container [2021-02-23 16:24:19,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:24:19" (3/3) ... [2021-02-23 16:24:19,063 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product26.cil.c [2021-02-23 16:24:19,071 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:24:19,077 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:24:19,099 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:24:19,124 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:24:19,124 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:24:19,124 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:24:19,124 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:24:19,125 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:24:19,125 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:24:19,125 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:24:19,125 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:24:19,152 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2021-02-23 16:24:19,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-23 16:24:19,173 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:24:19,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:24:19,174 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:24:19,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:24:19,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1813095377, now seen corresponding path program 1 times [2021-02-23 16:24:19,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:24:19,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33287460] [2021-02-23 16:24:19,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:24:19,285 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:24:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:19,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:19,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:19,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:19,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:20,048 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:24:20,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:24:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:20,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:20,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:20,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:24:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:20,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:20,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:20,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:24:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:20,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:20,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:20,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:24:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:20,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:20,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:20,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:24:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:20,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:20,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:20,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:24:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:20,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:20,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:20,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:24:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:20,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:20,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:20,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:24:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:20,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:20,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:20,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:24:20,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33287460] [2021-02-23 16:24:20,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:24:20,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:24:20,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796741845] [2021-02-23 16:24:20,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:24:20,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:24:20,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:24:20,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:24:20,296 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2021-02-23 16:24:21,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:24:21,874 INFO L93 Difference]: Finished difference Result 450 states and 533 transitions. [2021-02-23 16:24:21,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:24:21,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-23 16:24:21,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:24:21,892 INFO L225 Difference]: With dead ends: 450 [2021-02-23 16:24:21,892 INFO L226 Difference]: Without dead ends: 284 [2021-02-23 16:24:21,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:24:21,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-02-23 16:24:22,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 244. [2021-02-23 16:24:22,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2021-02-23 16:24:22,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 262 transitions. [2021-02-23 16:24:22,081 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 262 transitions. Word has length 158 [2021-02-23 16:24:22,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:24:22,082 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 262 transitions. [2021-02-23 16:24:22,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:24:22,083 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 262 transitions. [2021-02-23 16:24:22,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-23 16:24:22,087 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:24:22,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:24:22,088 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:24:22,088 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:24:22,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:24:22,089 INFO L82 PathProgramCache]: Analyzing trace with hash -679572061, now seen corresponding path program 1 times [2021-02-23 16:24:22,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:24:22,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476775834] [2021-02-23 16:24:22,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:24:22,094 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:24:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:22,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:22,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:22,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:22,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:22,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:22,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:22,623 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:24:22,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:24:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:22,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:22,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:22,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:24:22,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:22,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:22,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:22,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:24:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:22,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:22,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:22,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:24:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:22,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:22,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:22,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:24:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:22,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:22,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:22,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-23 16:24:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:22,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:22,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:22,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:24:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:22,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:22,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:22,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-23 16:24:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:22,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:22,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:22,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:24:22,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476775834] [2021-02-23 16:24:22,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:24:22,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:24:22,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833660182] [2021-02-23 16:24:22,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:24:22,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:24:22,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:24:22,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:24:22,813 INFO L87 Difference]: Start difference. First operand 244 states and 262 transitions. Second operand 4 states. [2021-02-23 16:24:23,550 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:24:24,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:24:24,486 INFO L93 Difference]: Finished difference Result 362 states and 403 transitions. [2021-02-23 16:24:24,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:24:24,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-23 16:24:24,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:24:24,491 INFO L225 Difference]: With dead ends: 362 [2021-02-23 16:24:24,491 INFO L226 Difference]: Without dead ends: 267 [2021-02-23 16:24:24,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:24:24,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-02-23 16:24:24,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 234. [2021-02-23 16:24:24,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2021-02-23 16:24:24,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 249 transitions. [2021-02-23 16:24:24,604 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 249 transitions. Word has length 159 [2021-02-23 16:24:24,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:24:24,606 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 249 transitions. [2021-02-23 16:24:24,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:24:24,610 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 249 transitions. [2021-02-23 16:24:24,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-23 16:24:24,615 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:24:24,616 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:24:24,621 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:24:24,621 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:24:24,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:24:24,622 INFO L82 PathProgramCache]: Analyzing trace with hash -394868311, now seen corresponding path program 1 times [2021-02-23 16:24:24,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:24:24,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226960102] [2021-02-23 16:24:24,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:24:24,628 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:24:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:24,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:24,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:24,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:24,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:24,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:24,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:24,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:24,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:24,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:24,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:24:24,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:24,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:25,133 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:24:25,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:24:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:25,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:25,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:25,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:24:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:25,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:25,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:25,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:24:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:25,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:25,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:25,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:24:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:25,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:25,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:25,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:25,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:24:25,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:25,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:24:25,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:24:25,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:25,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:25,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:25,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:24:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:25,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:25,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:25,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:24:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:25,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:25,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:25,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-23 16:24:25,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:25,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:25,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:25,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-23 16:24:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:25,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:25,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:25,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:24:25,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226960102] [2021-02-23 16:24:25,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:24:25,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:24:25,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338115284] [2021-02-23 16:24:25,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:24:25,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:24:25,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:24:25,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:24:25,315 INFO L87 Difference]: Start difference. First operand 234 states and 249 transitions. Second operand 10 states. [2021-02-23 16:24:25,953 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:24:26,435 WARN L202 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:24:26,838 WARN L202 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:24:27,220 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:24:27,623 WARN L202 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:24:27,991 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:24:29,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:24:29,624 INFO L93 Difference]: Finished difference Result 408 states and 465 transitions. [2021-02-23 16:24:29,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:24:29,630 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-23 16:24:29,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:24:29,634 INFO L225 Difference]: With dead ends: 408 [2021-02-23 16:24:29,634 INFO L226 Difference]: Without dead ends: 289 [2021-02-23 16:24:29,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-23 16:24:29,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-02-23 16:24:29,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 234. [2021-02-23 16:24:29,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2021-02-23 16:24:29,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 248 transitions. [2021-02-23 16:24:29,727 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 248 transitions. Word has length 172 [2021-02-23 16:24:29,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:24:29,728 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 248 transitions. [2021-02-23 16:24:29,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:24:29,728 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 248 transitions. [2021-02-23 16:24:29,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-02-23 16:24:29,730 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:24:29,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:24:29,731 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:24:29,731 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:24:29,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:24:29,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1302300084, now seen corresponding path program 1 times [2021-02-23 16:24:29,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:24:29,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471367455] [2021-02-23 16:24:29,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:24:29,735 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:24:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:29,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:29,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:29,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:29,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:29,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:29,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:29,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:29,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:29,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:29,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:29,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:29,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:29,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:29,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:29,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:29,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:30,147 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:24:30,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:24:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:30,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:30,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:30,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:30,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:24:30,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:24:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:30,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:30,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:30,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:24:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:30,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:30,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:30,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:24:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:30,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:30,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:30,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:24:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:30,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:30,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:30,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:24:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:30,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:30,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:30,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:24:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:30,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:30,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:30,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:24:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:30,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:30,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:30,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-23 16:24:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:30,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:30,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:30,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-23 16:24:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:30,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:30,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:30,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:30,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:30,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:30,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:30,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-02-23 16:24:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:30,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:30,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:30,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:24:30,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471367455] [2021-02-23 16:24:30,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:24:30,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:24:30,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106720701] [2021-02-23 16:24:30,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:24:30,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:24:30,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:24:30,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:24:30,324 INFO L87 Difference]: Start difference. First operand 234 states and 248 transitions. Second operand 10 states. [2021-02-23 16:24:31,042 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:24:32,970 WARN L202 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:24:33,474 WARN L202 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:24:33,948 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:24:34,408 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:24:34,806 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:24:35,268 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:24:35,658 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:24:36,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:24:36,830 INFO L93 Difference]: Finished difference Result 630 states and 772 transitions. [2021-02-23 16:24:36,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-23 16:24:36,831 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 180 [2021-02-23 16:24:36,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:24:36,838 INFO L225 Difference]: With dead ends: 630 [2021-02-23 16:24:36,838 INFO L226 Difference]: Without dead ends: 511 [2021-02-23 16:24:36,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2021-02-23 16:24:36,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-02-23 16:24:37,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 345. [2021-02-23 16:24:37,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2021-02-23 16:24:37,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 376 transitions. [2021-02-23 16:24:37,010 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 376 transitions. Word has length 180 [2021-02-23 16:24:37,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:24:37,011 INFO L480 AbstractCegarLoop]: Abstraction has 345 states and 376 transitions. [2021-02-23 16:24:37,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:24:37,011 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 376 transitions. [2021-02-23 16:24:37,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-02-23 16:24:37,014 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:24:37,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:24:37,015 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:24:37,015 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:24:37,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:24:37,016 INFO L82 PathProgramCache]: Analyzing trace with hash 812446382, now seen corresponding path program 1 times [2021-02-23 16:24:37,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:24:37,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226434673] [2021-02-23 16:24:37,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:24:37,019 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:24:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:37,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:37,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:37,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:37,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:37,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:37,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:37,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:37,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:37,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:37,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:37,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:37,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:37,450 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:24:37,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:24:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:37,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:37,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:37,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:37,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:37,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:24:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:37,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:37,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:37,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:24:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:37,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:37,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:37,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:24:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:37,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:37,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:37,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:24:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:37,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:37,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:37,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-02-23 16:24:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:37,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:37,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:37,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-23 16:24:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:37,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:37,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:37,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:24:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:37,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:37,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:37,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:24:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:37,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:37,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:37,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:24:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:37,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:37,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:37,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-23 16:24:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:37,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:37,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:37,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-02-23 16:24:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:37,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:37,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:37,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-23 16:24:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:37,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:37,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:37,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:24:37,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226434673] [2021-02-23 16:24:37,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:24:37,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 16:24:37,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226723151] [2021-02-23 16:24:37,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 16:24:37,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:24:37,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 16:24:37,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-23 16:24:37,698 INFO L87 Difference]: Start difference. First operand 345 states and 376 transitions. Second operand 7 states. [2021-02-23 16:24:38,324 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:24:39,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:24:39,373 INFO L93 Difference]: Finished difference Result 567 states and 655 transitions. [2021-02-23 16:24:39,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:24:39,374 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2021-02-23 16:24:39,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:24:39,378 INFO L225 Difference]: With dead ends: 567 [2021-02-23 16:24:39,378 INFO L226 Difference]: Without dead ends: 337 [2021-02-23 16:24:39,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:24:39,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-02-23 16:24:39,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 271. [2021-02-23 16:24:39,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2021-02-23 16:24:39,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 286 transitions. [2021-02-23 16:24:39,487 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 286 transitions. Word has length 190 [2021-02-23 16:24:39,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:24:39,487 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 286 transitions. [2021-02-23 16:24:39,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 16:24:39,488 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 286 transitions. [2021-02-23 16:24:39,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-02-23 16:24:39,490 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:24:39,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:24:39,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:24:39,491 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:24:39,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:24:39,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1625880092, now seen corresponding path program 1 times [2021-02-23 16:24:39,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:24:39,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268330327] [2021-02-23 16:24:39,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:24:39,494 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:24:39,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:24:39,571 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:24:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:24:39,645 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:24:39,839 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:24:39,840 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:24:39,841 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 16:24:39,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:24:39 BoogieIcfgContainer [2021-02-23 16:24:39,865 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:24:39,866 INFO L168 Benchmark]: Toolchain (without parser) took 22987.28 ms. Allocated memory was 157.3 MB in the beginning and 429.9 MB in the end (delta: 272.6 MB). Free memory was 132.8 MB in the beginning and 243.6 MB in the end (delta: -110.8 MB). Peak memory consumption was 163.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:24:39,866 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 157.3 MB. Free memory is still 131.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:24:39,866 INFO L168 Benchmark]: CACSL2BoogieTranslator took 807.80 ms. Allocated memory is still 157.3 MB. Free memory was 131.7 MB in the beginning and 111.2 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:24:39,867 INFO L168 Benchmark]: Boogie Preprocessor took 159.45 ms. Allocated memory is still 157.3 MB. Free memory was 111.2 MB in the beginning and 138.9 MB in the end (delta: -27.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2021-02-23 16:24:39,867 INFO L168 Benchmark]: RCFGBuilder took 1189.93 ms. Allocated memory is still 157.3 MB. Free memory was 138.9 MB in the beginning and 87.0 MB in the end (delta: 51.9 MB). Peak memory consumption was 58.7 MB. Max. memory is 8.0 GB. [2021-02-23 16:24:39,868 INFO L168 Benchmark]: TraceAbstraction took 20809.14 ms. Allocated memory was 157.3 MB in the beginning and 429.9 MB in the end (delta: 272.6 MB). Free memory was 87.0 MB in the beginning and 243.6 MB in the end (delta: -156.6 MB). Peak memory consumption was 116.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:24:39,870 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 157.3 MB. Free memory is still 131.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 807.80 ms. Allocated memory is still 157.3 MB. Free memory was 131.7 MB in the beginning and 111.2 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 159.45 ms. Allocated memory is still 157.3 MB. Free memory was 111.2 MB in the beginning and 138.9 MB in the end (delta: -27.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1189.93 ms. Allocated memory is still 157.3 MB. Free memory was 138.9 MB in the beginning and 87.0 MB in the end (delta: 51.9 MB). Peak memory consumption was 58.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 20809.14 ms. Allocated memory was 157.3 MB in the beginning and 429.9 MB in the end (delta: 272.6 MB). Free memory was 87.0 MB in the beginning and 243.6 MB in the end (delta: -156.6 MB). Peak memory consumption was 116.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 645]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L186] int waterLevel = 1; [L187] int methaneLevelCritical = 0; [L444] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L654] int pumpRunning = 0; [L655] int systemActive = 1; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L172] int retValue_acc ; [L175] retValue_acc = 1 [L176] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L114] CALL test() [L834] int splverifierCounter ; [L835] int tmp ; [L836] int tmp___0 ; [L837] int tmp___1 ; [L838] int tmp___2 ; [L841] splverifierCounter = 0 [L843] COND TRUE 1 [L845] COND TRUE splverifierCounter < 4 [L851] tmp = __VERIFIER_nondet_int() [L853] COND TRUE \read(tmp) [L855] CALL waterRise() [L204] COND TRUE waterLevel < 2 [L205] waterLevel = waterLevel + 1 [L855] RET waterRise() [L861] tmp___0 = __VERIFIER_nondet_int() [L863] COND FALSE !(\read(tmp___0)) [L871] tmp___2 = __VERIFIER_nondet_int() [L873] COND TRUE \read(tmp___2) [L875] CALL startSystem() [L828] systemActive = 1 [L875] RET startSystem() [L888] CALL timeShift() [L662] COND FALSE !(\read(pumpRunning)) [L669] COND TRUE \read(systemActive) [L671] CALL processEnvironment() [L691] int tmp ; [L694] COND FALSE !(\read(pumpRunning)) [L709] FCALL processEnvironment__wrappee__base() [L671] RET processEnvironment() [L677] CALL __utac_acc__Specification3_spec__1() [L901] int tmp ; [L902] int tmp___0 ; [L903] int tmp___1 ; [L907] CALL, EXPR isMethaneLevelCritical() [L225] int retValue_acc ; [L228] retValue_acc = methaneLevelCritical [L229] return (retValue_acc); [L907] RET, EXPR isMethaneLevelCritical() [L907] tmp = isMethaneLevelCritical() [L909] COND FALSE !(\read(tmp)) [L913] CALL, EXPR getWaterLevel() [L257] int retValue_acc ; [L260] retValue_acc = waterLevel [L261] return (retValue_acc); [L913] RET, EXPR getWaterLevel() [L913] tmp___0 = getWaterLevel() [L915] COND TRUE tmp___0 == 2 [L917] CALL, EXPR isPumpRunning() [L761] int retValue_acc ; [L764] retValue_acc = pumpRunning [L765] return (retValue_acc); [L917] RET, EXPR isPumpRunning() [L917] tmp___1 = isPumpRunning() [L919] COND FALSE !(\read(tmp___1)) [L923] CALL __automaton_fail() [L645] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 631 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 20.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 15.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1080 SDtfs, 1962 SDslu, 1426 SDs, 0 SdLazy, 2744 SolverSat, 580 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 167 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=345occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 360 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...